Deformable stow box door hinge

ABSTRACT

As described herein, a hinge system may comprise one or more a guide wire hinges. In general, the guide wire hinges may be unitary members having a generally constant diameter. A pair of guide wire hinges may be utilized to hingeably couple a stow box door to the stow box housing. The hinge system may be configured to be deformable in response to experiencing a warping.

FIELD

The present disclosure relates to a hinge, and more specifically, to astow box door hinge configured to deform.

BACKGROUND

Historical cabin attendant seat (CAS) stow box door hinge systemsincluded several hinge halves and pins along with multiple pieces ofhardware utilized to attach the stow box door to a housing and/or thefloor pan. For instance, in many cases a hinge similar to a piano hingewas employed. This conventional system is effective at holding the loadsfor normal operation of the door but does not have inherent flexibilityand may transmit excessive loads to the latching and mounting points ofthe door on the housing.

SUMMARY

In various embodiments, a hinge system is described. The hinge systemmay include a unitary guide wire comprising a first end and a secondend. The hinge system may include a first side wall of a housingcomprising a first blind retention hole. The hinge system may include ahousing door comprising an integral through-hole and undercut retentionstructure. The unitary guide wire may pass through the through-hole. Thefirst end of the unitary guide wire may be is press fit into the firstblind retention hole. The second end of the unitary guide wire may bepress fit into the undercut retention structure. The hinge system may beconfigured to be deformable in response to experiencing a warping.

According to various embodiments, a guide wire hinge is disclosed. Theguide wire hinge may comprise a first end, a second end, a body having aconstant diameter and an angled portion of the body comprising an angleof about 90 degrees, wherein the guide wire hinge is configured to bedeformable in response to experiencing a warping.

BRIEF DESCRIPTION OF THE DRAWINGS

The subject matter of the present disclosure is particularly pointed outand distinctly claimed in the concluding portion of the specification. Amore complete understanding of the present disclosure, however, may bestbe obtained by referring to the detailed description and claims whenconsidered in connection with the drawing figures, wherein like numeralsdenote like elements.

FIG. 1 illustrates a front view of an open CAS stow box comprising ahinge system according to various embodiments;

FIG. 2 illustrates a close-up view of an open CAS stow box comprising ahinge system according to various embodiments;

FIG. 3 illustrates a close-up view of a post warping open CAS stow boxcomprising a hinge system according to various embodiments;

FIG. 4 illustrates a close-up back view of a post warping open CAS stowbox comprising a hinge system according to various embodiments; and

FIG. 5 illustrates an isometric view of a CAS and stow box comprising ahinge system according to various embodiments.

DETAILED DESCRIPTION

The detailed description of exemplary embodiments herein makes referenceto the accompanying drawings, which show exemplary embodiments by way ofillustration. While these exemplary embodiments are described insufficient detail to enable those skilled in the art to practice theinventions, it should be understood that other embodiments may berealized and that logical changes and adaptations in design andconstruction may be made in accordance with this invention and theteachings herein. Thus, the detailed description herein is presented forpurposes of illustration only and not of limitation. The scope of theinvention is defined by the appended claims. For example, the stepsrecited in any of the method or process descriptions may be executed inany order and are not necessarily limited to the order presented.Furthermore, any reference to singular includes plural embodiments, andany reference to more than one component or step may include a singularembodiment or step. Also, any reference to attached, fixed, connected orthe like may include permanent, removable, temporary, partial, fulland/or any other possible attachment option.

Additionally, any reference to without contact (or similar phrases) mayalso include reduced contact or minimal contact. Furthermore, anyreference to singular includes plural embodiments, and any reference tomore than one component or step may include a singular embodiment orstep. Different cross-hatching is used throughout the figures to denotedifferent parts but not necessarily to denote the same or differentmaterials.

According to various embodiments and with reference to FIG. 1, animproved hinge system 100, such as a door 120 and hinge 150 for cabinattendant seat 510 (CAS) (with brief reference to FIG. 5) stow box 105is disclosed. As described herein, a stow box is generally defined as acompartment having a hinged lid. Hinge system 100 may be configured todeform and allow the door 120 of the stow box 105 to remain in theclosed position in response to the stow box 105 and/or CAS 510 beingsubject to stress and forces in a variety of directions. For instance,in response to a dynamic test the CAS 510 mounting points 260 (withbrief reference to FIGS. 2, 3 and 5) may be warped, such as by applyinga pitch and/or roll of about 10 degrees. This warping may createsignificant stress at the stow box 105 and/or door 120 hinge points.According to a variety of regulations, including the Federal AviationAdministration (FAA), a stow box 105 and/or door 120 hinge must be ableto handle pitch and/or roll warp of about 10 degrees in addition to thenormal dynamic loads and have minimal permanent deformation after theCAS 510 is un-warped and/or brought back to normal operating conditions.

According to various embodiments, hinge system 100 is configured suchthat high loads are not imparted on the hinge 150 latching points, suchas on either the door 120 or the side wall of the stow box 105.Excessive loads at the latching points may cause deformation which couldprevent and/or reduce ability of the door 120 from being operationalafter the dynamic test.

As previously mentioned, historical CAS stow box door hinge systemsincluded several hinge halves and pins along with multiple pieces ofhardware needed to attach the stow box door to the floor pan. Each sideof the hinge halves are anchored to either the door or the housing.These conventional systems were not designed with flexibility andtransmittal of excessive loads to the latching and mounting points inmind. Moreover, the high number of parts increases cost and weight ofthe system. Also, the high number of parts also increases assembly timeand the number of points of failure.

According to various embodiments, and with reference to FIGS. 1 and 2,hinge system 100 comprises a guide wire hinge 150. In general, guidewire hinge 150 may be a unitary member having a generally constantdiameter, though other cross-sectional geometries are contemplated.Guide wire hinge 150 may be any desired length. Guide wire hinge 150 maybe made from any desired material, but is preferably metallic and isdesirably made from stainless steel. A pair of guide wire hinges 150 maybe utilized to hingeably couple stow box door 120 to the stow box 105housing. Stow box 105 housing may comprise a pair of sidewalls 110.Sidewalls 110 may be generally parallel to each other. The stow box 105housing, such as within sidewall 110 may comprise an anchoring structure210.

Anchoring structure 210 may comprise any desired structure configuredfor rotation and movement of guide wire hinge 150. For instance, theanchoring structure 210 may comprise a blind hole. In this context theblind hole may refer to a hole that is reamed, drilled, machined and/ormilled to a specified depth, thus without breaking through to anotherside to create a through-hole. As should be appreciated within the scopeof this disclosure, a through-hole with retention member is alsocontemplated for housing a first end of the guide wire hinge 150.

According to various embodiments, guide wire hinge 150 is fed through athrough-hole 230 anchored to the stow box door 120. According to variousembodiments, guide wire hinge 150 is fed through a channel 170 proximatethrough-hole 230. Channel 170 may be machined in relief from a portionof stow box door 120. Channel 170 may allow for guide wire hinge 150 tohave freedom of movement along multiple axes Such as a in the X, Y,and/or Z planes. Channel 170 may comprise curved surface features toencourage deformation of guide wire hinge 150. Channel 170 may beconfigured to increase the degrees of freedom of the unitary guide wirein response to the unitary guide wire being in the channel 170 during awarping of the hinge system 100. Though channel 170 is depicted as beingbounded by the front face of stow box door 120, according to variousembodiments, a portion of the channel 170 may be entirely open to allowtotal freedom of movement. Stated another way, channel 170 may be madeshorter adjacent to an open void to allow total freedom of movement ofguide wire hinge 150.

Guide wire hinge 150 may bend from a first plane to a second planesubstantially perpendicular to the first plane. A second end of guidewire hinge 150 may be press fit inside a track 165. Track 165 maycomprise any geometric structure but may be a machinedundercut/overhang/relief structure configured to at least temporarilyretain the second end of guide wire hinge 150. Stated another way, track165 may be machined from a portion 160 of stow box door 120, such as analuminum extrusion, extending towards the interior of stow box 105 whenstow box door 120 is in the closed position. Keyed features machinedinto the stow box door 120, such as track 165, allow the second end ofthe guide wire hinge 150 to be attached to the stow box door withoutadditional fastening hardware and in general may serve to center thedoor between the pair of anchoring structures 210. Track 165, e.g., theundercut retention structure, may be configured to permit the second endof the unitary guide wire to have at least two degrees of lateralmovement and rotation movement. Stated another way the end of the guidewire hinge 150 may float within and/or while being covered by theundercut retention structure.

In operation, per FAA certification requirements, crash tests areperformed. During a crash test, one side of the CAS and/or stow boxanchoring supports is pitched downwards at least 10 degrees. Similarly,the opposite is rolled approximately 10 degrees to simulate a buckledfloor under the CAS. During this test, the seat is required to remainattached with the buckled floor and/or anchoring locations. The stow boxdoor 120 is mandated to remain closed as part of this test. With theinclusion of the guide wire hinge 150 which is configured to be aflexible hinge, the high stresses do not result in a cracked door and/orfailed retention mechanism resulting in an open stow box door. Byconfiguring the guide wire hinge 150 to be deformable, the stresses uponthe hinge are unloaded and substantially deformable guide wire hinge 150may be configured to absorb the buckling of the floor. Stated anotherway, in response to the seat warping, the cantilevered stow box door 120is designed to flex and/or bend and then return in general to itsoriginal shape after the warping is released. In general, after thistest, the stow box door 120 will have a higher percentage of operabilitywith the hinge system 100 design as compared with legacy designs.

According to various embodiments and with reference to FIGS. 3 and 4,prior to, during and after CAS warping, track 165 allows the second endof guide wire hinge 150 to both slide and/or pivot such that the stressis not applied to the stow box door 120. FIGS. 3 and 4 depict a stow boxdoor 120 post warping. While deformable guide wire hinge 150 maycomprise a second angled portion, generally proximate channel 170 and/orthrough-hole 230, stow box door 120 has remained functional to open andclose. Guide wire hinge 150 may exit track 165 as needed in response tothe warping tests. In this way, the second end of guide wire hinge 150is not permanently coupled to stow box door 120. Moreover, track 165allows for second end of guide wire hinge 150 to remain engaged inand/or coupled to stow box door 120 without the use of more permanentanchoring structures which may transfer more stress.

According to various embodiments, the pressure provided by a pair ofguide wire hinges 150 on stow box door 120 assist with the centering ofthe stow box door 120 as the hinges work to align the stow box door 120towards the middle of stow box 105.

The benefit of this new system is increased flexibility and reduction ofweight, cost, part count and assembly time. Benefits, other advantages,and solutions to problems have been described herein with regard tospecific embodiments. Furthermore, the connecting lines shown in thevarious figures contained herein are intended to represent exemplaryfunctional relationships and/or physical couplings between the variouselements. It should be noted that many alternative or additionalfunctional relationships or physical connections may be present in apractical system. However, the benefits, advantages, solutions toproblems, and any elements that may cause any benefit, advantage, orsolution to occur or become more pronounced are not to be construed ascritical, required, or essential features or elements of the inventions.The scope of the inventions is accordingly to be limited by nothingother than the appended claims, in which reference to an element in thesingular is not intended to mean “one and only one” unless explicitly sostated, but rather “one or more.” Moreover, where a phrase similar to“at least one of A, B, or C” is used in the claims, it is intended thatthe phrase be interpreted to mean that A alone may be present in anembodiment, B alone may be present in an embodiment, C alone may bepresent in an embodiment, or that any combination of the elements A, Band C may be present in a single embodiment; for example, A and B, A andC, B and C, or A and B and C.

Systems, methods and apparatus are provided herein. In the detaileddescription herein, references to “various embodiments”, “oneembodiment”, “an embodiment”, “an example embodiment”, etc., indicatethat the embodiment described may include a particular feature,structure, or characteristic, but every embodiment may not necessarilyinclude the particular feature, structure, or characteristic. Moreover,such phrases are not necessarily referring to the same embodiment.Further, when a particular feature, structure, or characteristic isdescribed in connection with an embodiment, it is submitted that it iswithin the knowledge of one skilled in the art to affect such feature,structure, or characteristic in connection with other embodimentswhether or not explicitly described. After reading the description, itwill be apparent to one skilled in the relevant art(s) how to implementthe disclosure in alternative embodiments.

Furthermore, no element, component, or method step in the presentdisclosure is intended to be dedicated to the public regardless ofwhether the element, component, or method step is explicitly recited inthe claims. No claim element herein is to be construed under theprovisions of 35 U.S.C. 112 (f) unless the element is expressly recitedusing the phrase “means for.” As used herein, the terms “comprises”,“comprising”, or any other variation thereof, are intended to cover anon-exclusive inclusion, such that a process, method, article, orapparatus that comprises a list of elements does not include only thoseelements but may include other elements not expressly listed or inherentto such process, method, article, or apparatus.

What is claimed is:
 1. A hinge system comprising: a first unitary guidewire comprising a first end and a second end; a first side wall of ahousing comprising a first blind retention hole; and a housing doorcomprising an integral through-hole encircling the first unitary guidewire to prevent the wire from moving laterally and an undercut retentionstructure, wherein the first unitary guide wire passes through theintegral through-hole, wherein the first end is press fit into the firstblind retention hole, wherein the second end is press fit into theundercut retention structure.
 2. The hinge system of claim 1, whereinthe hinge system is configured to be deformable in response toexperiencing a warping.
 3. The hinge system of claim 1, wherein thesecond end floats within the undercut retention structure.
 4. The hingesystem of claim 3, wherein the undercut retention structure isconfigured to permit the second end of the first unitary guide wire tohave at least two degrees of lateral movement and rotation movement. 5.The hinge system of claim 1, wherein the hinge system further comprisesa channel proximate the integral through-hole.
 6. The hinge system ofclaim 5, wherein the channel is configured to increase degrees offreedom of the first unitary guide wire in response to the first unitaryguide wire being in the channel.
 7. The hinge system of claim 5, whereinthe channel comprises a curved surface feature configured to encouragedeformation of guide wire hinge.
 8. The hinge system of claim 1, whereinthe undercut retention structure is machined from the housing door. 9.The hinge system of claim 1, wherein the undercut retention structure isconfigured to place a force on the second end of the first unitary guidewire.
 10. The hinge system of claim 1, wherein the hinge system furthercomprises: a second unitary guide wire comprising a second unitary guidewire first end and a second unitary guide wire second end; a second sidewall of the housing comprising a second blind retention hole; and thehousing door comprising a second integral through-hole and a secondundercut retention structure, wherein the second unitary guide wirepasses through a second through-hole, wherein the second unitary guidewire first end is press fit into the second blind retention hole,wherein the second unitary guide wire second end is press fit into thesecond undercut retention structure, wherein the first unitary guidewire and the second unitary guide wire are configured to center thehousing door substantially between the first blind retention hole andthe second blind retention hole.
 11. A hinge system comprising: a firstunitary guide wire comprising a first end and a second end; a first sidewall of a housing comprising a first blind retention hole; and a housingdoor comprising an integral through-hole and an undercut retentionstructure, wherein the first unitary guide wire passes through theintegral through-hole, wherein the first end is press fit into the firstblind retention hole, wherein the second end is press fit into theundercut retention structure, wherein the hinge system further comprisesa channel proximate the integral through-hole, and wherein the channelcomprises a curved surface feature configured to encourage deformationof guide wire hinge.
 12. The hinge system of claim 11, wherein theundercut retention structure is machined from the housing door.
 13. Thehinge system of claim 11, wherein the hinge system is configured to bedeformable in response to experiencing a warping.
 14. The hinge systemof claim 11, wherein the second end floats within the undercut retentionstructure.